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→
Fig. 4—Two-Stage Furnace
with Single-Speed Heat Pump
A98562
O/W2
Y1/W2
W/W1
G
R
R
G
DUAL FUEL
THERMOSTAT
TWO-STAGE
FURNACE
SINGLE-SPEED
HEAT PUMP
W/W1
C
Y
W2
O
C
B
L
S1
S2
R
Y/Y2
W2
C
HUM
HEAT STAGE 2
(FURNACE LO)
HEAT STAGE 3
(FURNACE HI)
HEAT/COOL
STAGE 1
(COMPRESSOR)
RVS COOLING
FAN
24 VAC HOT
24 VAC COM
N/A
RVS SENSING
OUTDOOR
SENSOR
CONNECTION
Y/Y2
OUTDOOR
SENSOR
See notes 1, 2, 3, 4, 7, and 9
SUGGESTED DIP
SWITCH SETTINGS
ON
A
B
C
D
OFF OFF OFF OFF
→
Fig. 2—Single-Stage Furnace
with Single-Speed Heat Pump
A98443
O/W2
Y1/W2
W/W1
G
R
R
G
DUAL FUEL
THERMOSTAT
SINGLE-STAGE
FURNACE
SINGLE-SPEED
HEAT PUMP
W
C
Y
W2
O
C
B
L
S1
S2
R
Y
C
HUM
HEAT STAGE 2
(FURNACE)
N/A
HEAT/COOL
STAGE 1
(COMPRESSOR)
RVS COOLING
FAN
24 VAC HOT
24 VAC COM
N/A
RVS SENSING
OUTDOOR
SENSOR
CONNECTION
Y/Y2
OUTDOOR
SENSOR
See notes 1, 2, 3, 4, and 9
SUGGESTED DIP
SWITCH SETTINGS
ON
A
B
C
D
OFF OFF OFF OFF
→
Fig. 5—Two-Stage Furnace
with 2-Speed Heat Pump
A98563
O/W2
Y1/W2
W/W1
G
R
R
G
DUAL FUEL
THERMOSTAT
TWO-STAGE
FURNACE
TWO-SPEED
HEAT PUMP
W/W1
C
Y2
W2
O
Y1
W3
C
B
L
S1
S2
R
Y/Y2
C
HUM
W2
HEAT STAGE 3
(FURNACE)
HEAT/COOL
STAGE 2
(COMPRESSOR HI)
HEAT/COOL
STAGE 1
(COMPRESSOR LO)
RVS COOLING
FAN
24 VAC HOT
24 VAC COM
N/A
RVS SENSING
OUTDOOR
SENSOR
CONNECTION
Y/Y2
OUTDOOR
SENSOR
See notes 1, 2, 3, 4, 5, 6, 8, and 10
SUGGESTED DIP
SWITCH SETTINGS
ON
A
B
C
D
OFF OFF OFF ON
→
Fig. 3—Single-Stage Furnace
with 2-Speed Heat Pump
A98444
O/W2
Y1/W2
W/W1
G
R
R
G
DUAL FUEL
THERMOSTAT
SINGLE-STAGE
FURNACE
TWO-SPEED
HEAT PUMP
W
C
Y2
W2
O
Y1
W3
C
B
L
S1
S2
R
Y
C
HUM
HEAT STAGE 3
(FURNACE)
HEAT/COOL
STAGE 2
(COMPRESSOR HI)
HEAT/COOL
STAGE 1
(COMPRESSOR LO)
RVS COOLING
FAN
24 VAC HOT
24 VAC COM
N/A
RVS SENSING
OUTDOOR
SENSOR
CONNECTION
Y/Y2
OUTDOOR
SENSOR
See notes 1, 2, 3, 4, 5, 6, and 10
SUGGESTED DIP
SWITCH SETTINGS
ON
A
B
C
D
OFF OFF OFF ON
8